I got a Dragon Scale on the first night of Gen 2 dropping (Feb 16), which was a pleasant surprise. I got a King's Rock on the morning of the 18th, which was a 7-day spin, but I didn't make the connection at the time. At that point, I was thinking "wow, guess they won't be THAT uncommon after all..."
Haven't seen one since
Now, I'm not REALLY complaining, because 2 is better than 1 or none, but still, it's frustrating to have some of these Gen 2 evolutions held up just waiting for these rare items to randomly drop. I've got multiple high-IV mons with enough candy to evolve, but they're starving for evolution stones